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Transcript
Let’s Look at structures in Animal Cells First Cell Membrane This structure, in animal and plant cells, holds the parts of the cell inside and controls the movement of materials in and out of the cell. The Nucleus • Controls most activities in the cell • Contains all genetic information in the form of DNA. DNA Nucleus Chromatin Chromosome Nucleolus Nuclear Envelope It is like the “Brain” of the cell Cytoplasm This is the jelly-like substance in which the structures inside the plant and animal cells float and move Endoplasmic Reticulum – 2 Types: 1.Rough ER: – Rough appearance because it has ribosomes – Function: helps make proteins, that’s why it has ribosomes 2.Smooth ER: – NO ribosomes – Function: lipids; and detoxifies Endoplasmic Reticulum • Series of folded membranes that form sacs or tubes • Rough ER has ribosomes attached Ribosomes • Makes proteins in the cell • May be free in cytoplasm or attached to ER Golgi Bodies • Saclike membranes • Modifies proteins • Sorts and packages used for storing/ packages • “Post Office” Vacuole Temporary storage area for food and waste. Plant cell—one large CENTRAL VACUOLE Animals-fewer, smaller. t It is like a pantry. Lysosomes Garbage Disposal (“suicide sacs) • Contain digestive enzymes to digest unwanted particles • Help white blood cells to destroy bacteria The Energy Tranformers • Mitochondria • Chloroplast Mitochondria • Energy producers—ATPreleases energy from digested food • Powerhouse of the cell • Sausage-shaped • Many mitochondria in muscle cells Centrioles • -microtubules form here for cell division These are found in plants—not animals • Cell Wall • Chloroplast Cell Wall This structure is not found in animal cells. Made of cellulose in plants Permeable-not selective Provides support and protection for the plant cell. Chloroplast photosynthesis plant makes food. Animal Cell 7A Building blocks of life - Typical plant cell Complete the web with four characteristics of cells. All organisms -living thingsare made of cells. Cells Cells do the jobs that keep organisms alive. Cells are the smallest part of a living thing. These cells are like tiny building blocks. Compare and Contrast plant and animal cells. Animal Cells Plant Cells Compare and Contrast plant and animal cells. Animal Cells •Cell membrane •Cytoplasm •Vacuoles •Nucleus •Chromosomes •Mitochondria Plant Cells •Cell wall •Cell membrane •Cytoplasm •Vacuoles •Chloroplasts •Nucleus •Chromosomes •Mitochondria • • • • • • • • • • Nucleus ______________________The part of the cell that controls the cells activities. Cell Wall ______________________The rigid outer covering that protects the cell. Mitochondria ______________________The organelle that releases energy from the food. ______________________The organelle that makes food for the plant Chloroplast cell. Vacuole _______________________The storage place for the waste, food, and water. Cell Membrane _______________________The thin covering that holds the parts of the cell in place. _______________________jelly-like substance that contains chemicals Cytoplasm the cell needs to function. Chromosomes ___________________the thread-like structures that contains information about the cell’s characteristics. . What two things does a plant cell contain that an animal cell does not? Cell Wall ___________, ___________ Chloroplast Cell membrane, cell wall, nucleus, mitochondria, vacuole, cytoplasm, chloroplasts, chromosomes, Cell Parts and definitions • • • • • • • • The organelle that supports and gives shape to the plant cell. Cell Wall The organelle that releases the energy made from the food. Mitochondria The organelle that makes food for the plant cell. Chloroplast The organelle that surrounds the cell and holds the cell’s “insides” in place. “skin”. Cell Membrane The organelle that stores food, water and waste. Vacuole The organelle that is the control center that controls the cell’s activities. “brain” Nucleus The organelles that are the threadlike structures that contain the cell’s characteristics. DNA-chromosomes The organelle that is a jellylike substance Cytoplasm Cell Resources • • • • • • • • Label Cells I know that! Cells Alive How to use a microscope Cell Structure The Virtual Cell Mixed Up Cells Electron Microscope (scroll down)